The Lord said to Cain, “Why are you angry? Why has your countenance fallen?If you do well, will you not be accepted? And if you do not do well, sin is lurking at the door; its desire is for you, but you must master it.” – Genesis 4:6-7
Cain was about to “take matters into his own hand,” leaving this conversation with God to go murder his brother, Abel. No one ever mastered sin that way! Becoming more absorbed in self – what I want, what I have convinced myself I need, what I think I deserve – renders me unable to see the gracious opportunity God always gives me to overcome lurking sin and step into the light of loving my brothers and sisters.
We will overcome temptation with the help of the Overcomer, who was tested, as we are, yet without sin! (see Hebrews 4:15)